Cerebral venous thrombosis

The cavernous sinus is one of the several cerebral veins and cavernous sinus thrombosis is a specific type of cerebral venous (sinus) thrombosis. See that article for a discussion of that specific clinical entity.

Cord sign: thrombus in the cerebral sinus may appear as a hyperattenuated foci. It is homogenous in nature and appears linear or round based on the affected sinus. This is most commonly seen in the first week. [6]

Vein Sign: After two weeks, the thrombus becomes hypoattenuated. When the thrombus is located in the deep vein it is referred to as the vein sign. [7]

Non contrast CT possesses insufficient sensitivity or specificity to be of diagnostic value in the setting of high clinical suspicion

Labs

D-Dimer is not a reliable test to rule out a cerebral venous thrombosis[8]